Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

A new multi-billion pound tunnel which will connect Denmark to Germany is set to open in 2029 and become the largest ...

Proposals have been put forward for a Transatlantic Tunnel linking New York and London costing a staggering $20 trillion, but ...

A study is underway to decide whether Alaska should build an underwater tunnel or not—with the research expected to cost at least $1 million, according to reports. Officials hope to establish ...

The operator of Japan’s crippled Fukushima nuclear power plant intends to build an underwater tunnel to release water from the plant into the sea, it said on Tuesday, as part of a project to ...